diff --git a/README.md b/README.md
index c8a2301..5652622 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,7 @@ To get started with the project environment, run the following:
 
 ``` bash
 $ cd RoboND-DeepRL-Project/build/aarch64/bin
+$ chmod u+x gazebo-arm.sh
 $ ./gazebo-arm.sh
 ```